Storage battery



Dec. 26. 1922. 1,440,023

S. M. MEYER ET AL.

STORAGE BATTERY.

mm on. 29. 921.

@caemaa "WEI/T005 and. mu

Patented Dec. 26, 1922.

UNITED STATES ATENT OFFICE SVJSND M. MEYER AND WILLIAM JAMES, O]?BROOKLYN. NEVJ YORK. ASSIGNORS TO MAGNO STORAGE BATTERY COREGRATION.076' NEW YORK. N. Y.. A CORPORATION OF DELAWARE.

STORAGE BATTERY.

Application filed October To all w/rmn if may} (On/rem:

lle it known that \l'e. huixn Bl. Marian and WILLIAM Janka. citizens oithe lnited States. and residents of the borough of Brooklyn. county ofKings. city and State of New York, have. invented certain new and usefulImprovements in Storage llatterios, of which the following is aspecific-ation.

Our present invention relates to tho structure of the positive electrodeof an electric storage battery. The object of our invention is to produe a positive electrode that will have a longer life. he physicall;stronger and recuporatr more quickly a l'ter heavy discharge.

To accomplish this ohjcct. our positive electrode is constructed in theform of a hox with perforated sides. the pcrt'oration luing arranged ina particular manner. The active material is placed within this box andin the center of the active material is :1 inctallic collcctor of suchshape that the action in the active material on discharge will bringabout the llPHllGd object.

In order that the invention may he lull understood. it will first hedescrila-d in connection with the accompanying draflvingu and afterwardsmore particularly pointed out in the annexed claim.

In said drawings Figure, 1 is a plan view of our positixe plate shown ina suitahle container in con-- nection with two negative electrodes.

Figure 2 is a side elevation.

Figure 3 is a vertical. tra nsrersc. sectional view taken on the, lines(L-73 of Figure 2'3.

Figure 4 is a sectional view taken on the lines 44 of Figure Figure 5 isa vertical. secti nal \icw through the center-of the electrode showingthe collector in elevation.

Figure 6 is a. perspective \"iow ol' the two plates which form the sidesof the electi-oilo and also the collector. r

Similar nurneals refer to similar oartsthroughout the views.

In making up our electrode. a dished front plate 1. Figure 6. is formedwith a shallow depression extending overits surface and uh a flange 9around the periphery. )n :ucorner of this plate. an extension 10 isprovided to act as a terminal. Pcrr'orations i1 are made in stagg redrows. Back plate 1 made in a similar manner except that it 19531, SerialNO. 511,395.

has added flanges .3 heat at right angles to ihelplatc. lixtclniflll 12actsv as a terminal for electrical connection. collector or distriliutor4. consisting of four leaves extending outwardly from a central portion.having tips T. and provided with,perforations ll. is also used. Thedepressions in plate l and (l arc lilled with a panic of active materialpressed in so that the pcrt'orationa arc coniplctclfv filled and theinside surfa es flush with the Hanoi-is. The active material may consi tol lead oxide mixed with sllYcwin Flllpllllilr' acid and water as ahiinlcr. or c may mixture of lithara' and out lead with i c-.ri|oniilllnlllllll! to increaw he oinlucliviltfl (pilot-tor l is placed onhaul; plat as ahown in Figure 5. and from plan- I Moor-ht firmly incontact with plate t and thc flanges .11 hcnt ver flanges fl. thcrehyinciting the front and hack plates; lugul lu'l and making a stronghoxhlni :structurc with the active material and collector 4 on theinsiilc. it will he ohscrved that the tips 7 l' the leaves of thecollector -l are lamp d llll\\'L'lll liana'cs of incmhcrs 1 and i. hasmail ng a good electrical onnection thcrclo. lhc extensions. l1 and 12conic opposite each other and currcut is supplied to and taken from theclc trodc through them l llie post H which is attached to it) and i2 hany vsuitahlo means such as hy R't'hlliuj. i

We have found that the arrangement of the perloralions in the front platin rcla lion in the erforations in the hack platc is very important inpreventingbuckling. Referringto Figures 3 and 4. it is seen that theporlhrations 3 are staggered in relation to thc perforations (7-. hoth\ci'ti allv and horizontally.

l nc to its p sition in tin owl l the IH'tiYP material. thc collector li tin tli cl factor in ilis'tv'ihutiug and roll r-tin; the currcnt.during;- charge and dis harg We have found that the shape and size 'iltoe collector arc vc important for in: proper functioning l thcelectrode. We haic inrthcr found that tlu shape of th collcctor shouldlw such that the elcctrii-chmuical action ill he. largely at the c nterof lheclectrolhp at the her-inningol' charge or dist'IHIIQl and muprom-ml toward the corncr ol' the ad ctrmlc a chargc or dischargiproneed .\l; .u that the sizc of thc milloctor in relation to the hll Afol' the clc'lrodc should ingbe such that on short-circuit,the dischargecurrent will be limited by resistance in the active material. Under suchconditions, when the short-circuit is removed, the electrode recuperatesvery quickly due to local action between those portions of the activematerial that are more remote from the collector and those portionsadjacent to it. By so limiting the maximum current that can be drawnfrom" the electrode its life is very mateiially prolonged. The collectoror distributor 4 is preferably made in the form of a conventionalquadrifoil figure. as shown in Figure 5, in which its total area isequivalent to approximately one-quarter the area of the whole electrode.

W'e prefer to make plates 1 and 3 of hard lead (6% antimony) aboutone-sixteenths of an inch thick and the collector 4 of soft lead(substantially pure lead) about onethirty seconds of an inch thick.

We claim A positive electrode for storage batteries having a case forcontaining the active material consisting of front and back plates ofperforated lead sheets, the edges of one overlapping and enveloping theedges of the other on the four edges and a central collector member ofperforated sheet lead having wings extending in between the saidenveloping edges and being clamped and held thereby.

SVEND M. MEYER. WILLIAM JAMES.

